vue not defined code example

Example 1: Vue is not defined

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/1.0.18/vue.min.js"></script>

Example 2: 'Vue' is not defined

import Vue from 'vue'

Example 3: Uncaught ReferenceError: Vue is not defined

<script src="http://code.jquery.com/ui/1.12.1/jquery-ui.min.js">
</script>